Shaier: \'ascui.ar Flora ok Ai.lkohknv County. 113 



SAGITTARIA linna^iis. 



'■'I- S. latifolia \\ ilUlenow. Broad arrow -leaf, 

 .v. i\xriabiiis luigelmann. 



NAIADACE^ Linclley. 

 PONDWEED FAMILY. III-3. 

 POTAMOGETON Linnreus. 

 •:• P. natans Linm^us. Common floating pondweed. 



CYPERACEiE J. St. Hilaire. 



SEDGE FAMILY. III-8. 



CYPERUS Linnseus. 

 '■■^ C. flavescens Linnreus. Yellow cyperus. 



=:^ C. diandrus Torrey. Low cyperus. 



* C. rivularis Kunth. Shining cyperus. 



t C. strigOSUS Linnaeus. Straw-colored cyperus. 

 ^ C. speciosus Vahl. Michaux's cyperus. 



ELEOCHARIS R. Brown. 



* E. ovata (Roth). Ovoid spike-rush. 



•!- E. palustris (Linn?eus). Creeping spike-rush. 

 '^^ E. tenuis (Willdenow;. Slender spike-rush. 



SCIRPUS Linnaeus. 



* S. lacustris Linnaeus, (ireat bulrush. 



